Gorgeous pair! I'd guess early 1970s.
Interesting that the dryer doesn't have pushbuttons for temperature selection. IIRC, Whirlpool still had multiple tumble speeds on their TOL dryer of the time. Can't make out what are those controls ... temperature, EOC signal, push-to-start, and ... tumble speed or air-flow speed?.
Of all the times this pic has come 'round, today is the first time I've noticed the All detergent! (Or has somebody been playing with PhotoShop again?)